CN113357866A - Food material management method for refrigerator and refrigerator - Google Patents
Food material management method for refrigerator and refrigerator Download PDFInfo
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- CN113357866A CN113357866A CN202010150914.1A CN202010150914A CN113357866A CN 113357866 A CN113357866 A CN 113357866A CN 202010150914 A CN202010150914 A CN 202010150914A CN 113357866 A CN113357866 A CN 113357866A
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- 239000000463 material Substances 0.000 title claims abstract description 473
- 238000007726 management method Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 93
- 238000012545 processing Methods 0.000 claims abstract description 24
- 238000005192 partition Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 15
- 230000000295 complement effect Effects 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 3
- 230000006870 function Effects 0.000 description 11
- 230000008014 freezing Effects 0.000 description 10
- 238000007710 freezing Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
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- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a refrigerator food material management method and a refrigerator, relates to the field of household appliances, and can improve the accuracy of food material management of the refrigerator. The specific scheme is as follows: the refrigerator comprises at least two independent compartments, and adjacent compartments are separated by a heat-insulating partition plate; the RFID detection module is positioned in each chamber and used for transmitting wireless signals to the corresponding chamber and receiving RFID label signals in the chamber; shielding material positioned within the partition for shielding portions of the RFID tag signals within adjacent compartments; and the RFID processing module is connected with the RFID detection module and used for controlling the RFID detection module to transmit a wireless signal and receiving an RFID label signal fed back by the RFID detection module.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a food material management method of a refrigerator and the refrigerator.
Background
At present, a multi-compartment refrigerator having a Radio Frequency Identification (RFID) function can intelligently manage food stored therein.
In the related art, food material management for freezing compartments of a multi-compartment refrigerator has been achieved. An antenna is arranged in the freezing chamber and connected with the RFID module. After the door of the freezing chamber is closed, the RFID module of the refrigerator can identify the tag attached to the food material through the antenna in the freezing chamber, and acquire food material data on the tag, wherein the food material data comprises an identifier for indicating the type of the food material. Thus, the refrigerator can know the food in the freezing chamber.
However, since the antenna in the freezing chamber may identify the tags of the food materials in other chambers, such as the refrigerating chamber or the temperature-changing chamber, and classify all the identified food materials into the freezing chamber, it is impossible to accurately know which food materials are included in the freezing chamber, i.e., it is impossible to accurately manage the food materials in the chambers.
Disclosure of Invention
The invention provides a refrigerator and a food material management method thereof, which can improve the accuracy of food material management of the refrigerator.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a refrigerator comprising:
at least two separate compartments, adjacent compartments being separated by a thermally insulating partition;
the RFID detection module is positioned in each chamber and used for transmitting wireless signals to the corresponding chamber and receiving RFID label signals in the chamber;
shielding material positioned within the partition for shielding portions of the RFID tag signals within adjacent compartments;
and the RFID processing module is connected with the RFID detection module and used for controlling the RFID detection module to transmit a wireless signal and receiving an RFID label signal fed back by the RFID detection module.
With reference to the first aspect, in one possible implementation manner, the shielding material is a metal material.
In a second aspect, the present invention provides a food material management method for a refrigerator, which is applied to the refrigerator of the first aspect or any one of the possible implementation manners of the first aspect, and the method includes:
after a door closing signal of the refrigerator is detected, the RFID processing module controls the RFID detection module arranged in each compartment to detect the RFID label corresponding to each food material in the corresponding compartment, and a first food material identification set is obtained;
determining food materials taken out of the refrigerator and/or food materials put into the refrigerator according to a comparison result of the first food material identification set and the second food material identification set, wherein the second food material identification set is a food material identification set obtained when the refrigerator is closed last time;
and determining the compartment to which the food material taken out of the refrigerator and/or the food material put into the refrigerator belongs according to the RFID detection module which detects the taken-out food material and/or the food material put into the refrigerator.
With reference to the second aspect, in a possible implementation manner, determining the food material taken out of the refrigerator and/or the food material put into the refrigerator according to a comparison result between the first food material identifier set and the second food material identifier set may specifically include: and if the second food material identification set is a proper subset of the first food material identification set, determining that the operation is food material placement, and the food material identification of the food material placed in the refrigerator is a third food material identification set which is an absolute complement of the second food material identification set in the first food material identification set. If the first food material identification set is a proper subset of the second food material identification set, determining that the operation is food material taking out, and the food material identification of the food material taken out from the refrigerator is a fourth food material identification set which is an absolute complement of the first food material identification set in the second food material identification set. If the first food material identification set is not the subset of the second food material identification set, determining that the operation is food material putting in and food material taking out, the food material identification of the food material taken out of the refrigerator is a fifth food material identification set, and the food material identification of the food material put in the refrigerator is a sixth food material identification set. And if the first food material identification set is the same as the second food material identification set, determining that the food materials are not picked and placed from the refrigerator.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, if the first food material identification set is not a subset of the second food material identification set, the method may specifically include: if the first food material identification set and the second food material identification set have an intersection, or if the first food material identification set and the second food material identification set do not have an intersection. When the first food material identification set and the second food material identification set have an intersection, the fifth food material identification set is contained in the second food material identification set and is not contained in the first food material identification set; the sixth food material identification set is included in the first food material identification set and is not included in the second food material identification set. When the first food material identifier set and the second food material identifier set do not intersect, the fifth food material identifier set is the second food material identifier set, and the sixth food material identifier set is the first food material identifier set.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, the method further includes: adding the food material identification of the food material put into the refrigerator into a database of a corresponding compartment; and deleting the food material identification of the food material taken out of the refrigerator from the database of the corresponding compartment.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, determining a compartment to which a food material taken out of a refrigerator belongs includes: when it is determined that the food material identification of the food material taken out of the refrigerator is contained in the database of the first compartment, it is determined that the taken-out food material belongs to the first compartment.
With reference to the second aspect and the foregoing possible implementation manners, in another possible implementation manner, determining a compartment to which a food material put into a refrigerator belongs includes:
if 1 RFID detection module of the food material put into the refrigerator is detected, determining that the food material put into the refrigerator belongs to the compartment where the RFID detection module of the food material put into the refrigerator is detected;
if the number of the RFID detection modules of the food materials put into the refrigerator is detected to be at least two, determining a compartment where the RFID detection module corresponding to the largest identification frequency in the identification frequencies corresponding to the at least two RFID detection modules belongs to the compartment where the food materials put into the refrigerator belong, and/or determining a compartment where the RFID detection module corresponding to the largest average return signal intensity in the average return signal intensities corresponding to the at least two RFID detection modules belongs to the compartment where the food materials put into the refrigerator belong; the identification frequency is the frequency that food materials put into the refrigerator in the preset time are detected by one RFID detection module, the average return signal strength is obtained by dividing the sum of the return signal strengths of the identification frequency by the identification frequency, and the return signal strength is the strength of an RFID label signal received by the RFID detection module.
In a third aspect, the present invention provides a refrigerator comprising: a control unit and a determination unit. And the control unit is used for controlling the RFID detection module arranged in each compartment to detect the RFID tag corresponding to each food material in the corresponding compartment after detecting a door closing signal of the refrigerator, so as to obtain a first food material identification set. And the determining unit is used for determining the food materials taken out of the refrigerator and/or the food materials put into the refrigerator according to the comparison result of the first food material identification set and the second food material identification set, wherein the second food material identification set is the food material identification set obtained when the refrigerator is closed last time. And determining the compartment to which the food material taken out of the refrigerator and/or the food material put into the refrigerator belongs according to the RFID detection module which detects the taken-out food material and/or the food material put into the refrigerator.
With reference to the third aspect, in a possible implementation manner, the determining unit is specifically configured to: and if the second food material identification set is a proper subset of the first food material identification set, determining that the operation is food material placement, and the food material identification of the food material placed in the refrigerator is a third food material identification set which is an absolute complement of the second food material identification set in the first food material identification set. If the first food material identification set is a proper subset of the second food material identification set, determining that the operation is food material taking out, and the food material identification of the food material taken out from the refrigerator is a fourth food material identification set which is an absolute complement of the first food material identification set in the second food material identification set. If the first food material identification set is not the subset of the second food material identification set, determining that the operation is food material putting in and food material taking out, the food material identification of the food material taken out of the refrigerator is a fifth food material identification set, and the food material identification of the food material put in the refrigerator is a sixth food material identification set. And if the first food material identification set is the same as the second food material identification set, determining that the food materials are not picked and placed from the refrigerator.
With reference to the third aspect and the foregoing possible implementation manners, in another possible implementation manner, the determining unit is specifically configured to: if the first food material identification set and the second food material identification set have an intersection, or if the first food material identification set and the second food material identification set do not have an intersection. When the first food material identification set and the second food material identification set have an intersection, the fifth food material identification set is contained in the second food material identification set and is not contained in the first food material identification set; the sixth food material identification set is included in the first food material identification set and is not included in the second food material identification set. When the first food material identifier set and the second food material identifier set do not intersect, the fifth food material identifier set is the second food material identifier set, and the sixth food material identifier set is the first food material identifier set.
With reference to the third aspect and the foregoing possible implementation manners, in another possible implementation manner, the refrigerator further includes: an adding unit and a deleting unit. And the adding unit is used for adding the food material identification of the food material put into the refrigerator into the database of the corresponding compartment. And the deleting unit is used for deleting the food material identification of the food material taken out of the refrigerator from the database of the corresponding compartment.
With reference to the third aspect and the foregoing possible implementation manners, in another possible implementation manner, the determining unit is specifically configured to: when it is determined that the food material identification of the food material taken out of the refrigerator is contained in the database of the first compartment, it is determined that the taken-out food material belongs to the first compartment.
With reference to the third aspect and the foregoing possible implementation manners, in another possible implementation manner, the determining unit is specifically configured to: if 1 RFID detection module of the food material put into the refrigerator is detected, determining that the food material put into the refrigerator belongs to the compartment where the RFID detection module of the food material put into the refrigerator is detected; if the number of the RFID detection modules of the food materials put into the refrigerator is detected to be at least two, determining a compartment where the RFID detection module corresponding to the largest identification frequency in the identification frequencies corresponding to the at least two RFID detection modules belongs to the compartment where the food materials put into the refrigerator belong, and/or determining a compartment where the RFID detection module corresponding to the largest average return signal intensity in the average return signal intensities corresponding to the at least two RFID detection modules belongs to the compartment where the food materials put into the refrigerator belong; the identification frequency is the frequency that food materials put into the refrigerator in the preset time are detected by one RFID detection module, the average return signal strength is obtained by dividing the sum of the return signal strengths of the identification frequency by the identification frequency, and the return signal strength is the strength of an RFID label signal received by the RFID detection module.
In a fourth aspect, the present invention provides a refrigerator comprising: a processor and a memory. The memory is used for storing computer-executable instructions, and when the refrigerator runs, the processor executes the computer-executable instructions stored by the memory, so that the refrigerator executes the food material management method of the refrigerator as in the second aspect or any one of the possible implementation manners of the second aspect.
In a fifth aspect, the present invention provides a computer-readable storage medium having stored thereon computer-executable instructions that, when executed on a refrigerator, cause the refrigerator to perform the food material management method of the refrigerator as in the second aspect or any one of the possible implementations of the second aspect.
According to the food material management method for the refrigerator, after the refrigerator detects a door closing signal of the refrigerator, the RFID processing module controls the RFID detection module arranged in each compartment to detect the RFID tag corresponding to each food material in the corresponding compartment to obtain a first food material identification set, the food material taken out of the refrigerator and/or the food material put into the refrigerator is determined according to the comparison result of the first food material identification set and the food material identification set obtained when the refrigerator is closed last time, namely the second food material identification set, and finally the compartment to which the food material taken out of the refrigerator and/or the food material put into the refrigerator belongs is determined according to the RFID detection module which detects the food material taken out of the refrigerator and/or the food material put into the refrigerator. Therefore, compared with the prior art that food materials are managed only by means of antenna identification, the refrigerator food material management method and the refrigerator food material management system have the advantages that the RFID detection modules are arranged in the compartments, and the shielding materials are added in the partition plates of the compartments, so that the fact that the RFID detection modules of the compartments can only identify the food materials in the compartments is guaranteed to the greatest extent, the error identification rate of the antennas of the compartments identifying the food materials in other compartments is reduced, and the accuracy of food material management of the refrigerator is improved.
Drawings
Fig. 1 is a schematic composition diagram of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an antenna identification tag according to an embodiment of the present invention;
fig. 3 is a flowchart of a food material management method for a refrigerator according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another refrigerator according to an embodiment of the present invention;
fig. 5 is a schematic composition diagram of another refrigerator according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic composition diagram of a refrigerator according to an embodiment of the present invention. As shown in fig. 1, the refrigerator may include:
at least two separate compartments 11, adjacent compartments 11 being separated by a thermally insulating partition.
An RFID detection module 12 located in each compartment, the RFID detection module 12 being configured to transmit a wireless signal into the corresponding compartment 11 and receive an RFID tag signal in the compartment 11.
Shielding material 13 located within the partition, the shielding material 13 being used to shield portions of the RFID tag signals within adjacent compartments 11.
And the RFID processing module 14, the RFID processing module 14 is respectively connected with the RFID detection module 12 in each compartment 11, and is used for controlling the RFID detection module 12 to transmit a wireless signal and receiving an RFID tag signal fed back by the RFID detection module 12.
Optionally, the shielding material 13 may be: metallic materials, etc. capable of shielding electromagnetic signals.
Optionally, the RFID detection module 12 may be specifically an antenna. The different compartments contain antennas of different powers. Moreover, the power of the antenna included in each chamber can ensure that the antenna can identify the food materials included in the chamber, the error identification rate can be increased when the power is too high, and the food materials in the chambers can not be identified completely when the power is too low.
In a specific implementation, the power of each compartment including the antenna can be determined in advance according to the space size of each compartment, and the power of each antenna is set in the refrigerator, wherein the larger the space is, the larger the power is.
Optionally, each food material in the compartment corresponds to a tag, and the tag includes a food material identifier.
Fig. 2 is a schematic diagram illustrating an antenna identification tag according to an embodiment of the present invention. As shown in fig. 2, it is assumed that the antenna 1 is disposed in a refrigerating compartment, the refrigerating compartment includes three food materials corresponding to three tags, a solid line in fig. 2 represents a distance between the antenna 1 and the tag, and a distance between the tag 2 and the antenna 1 > a distance between the tag 1 and the antenna 1 > a distance between the tag 3 and the antenna 1. The label identifying process comprises the following steps: the antenna 1 transmits a wireless signal which can be received by a chip built in a tag of the refrigerating compartment. Since the attenuation of the signal is related to the distance, the greater the attenuation is, so if three tags receive the wireless signals with the respective strengths: p1, P2, P3, then P3 > P1 > P2. After the built-in chip of the tag receives the wireless signal, an RFID tag signal can be returned to the antenna 1, and when the antenna 1 receives the RFID tag signals of the three tags, the information of the three tags can be identified by the antenna 1. Because the signal will be attenuated during the transmission process, if the antenna 1 receives the RFID tag signal strengths of the three tags, respectively: RP1, RP2, RP3, then P1 > RP1, P2 > RP2, P3 > RP 3. And RP3 > RP1 > RP 2.
It will be appreciated that the further away from the antenna 1 the tag in the refrigerated compartment is, there may be a critical point in the signal, the antenna 1 being detectable at times and undetectable at times.
Fig. 3 is a flowchart of a food material management method for a refrigerator according to an embodiment of the present invention, and as shown in fig. 3, the method may include:
201. after a door closing signal of the refrigerator is detected, the RFID processing module controls the RFID detection module arranged in each compartment to detect the RFID label corresponding to each food material in the corresponding compartment, and a first food material identification set is obtained.
When a door closing signal of the refrigerator is detected and it is determined that the doors of all the compartments are closed, the RFID processing module may control the RFID detection module arranged in each compartment to detect the RFID tag corresponding to each food material in the corresponding compartment, so as to obtain the first food material identifier set.
Specifically, after detecting a door closing signal of the refrigerator, the RFID processing module instructs each RFID detection module connected thereto to identify a tag corresponding to each food material included in the compartment, thereby obtaining a food material identifier of each food material. The tag includes a food material identification, such as an Electronic Product Code (EPC), that uniquely identifies the food material. After the RFID detection module detects the food material identifier of the food material in the compartment, the food material identifier can be sent to the RFID processing module. The RFID processing module may duplicate all the received food material identifiers to obtain a first food material identifier set, and store the first food material identifier set for subsequent use.
Optionally, in the embodiment of the present invention, the door closing signal of the refrigerator is detected, specifically, the door closing signal may be detected by detecting a magnetic sensitive switch, a mechanical switch, and the like of the compartment, which is not limited herein.
202. And determining the food materials taken out of the refrigerator and/or the food materials put into the refrigerator according to the comparison result of the first food material identification set and the second food material identification set.
After obtaining the first food material identifier set, the RFID processing module may compare the first food material identifier set with a food material identifier set, that is, a second food material identifier set, obtained when the refrigerator was last closed. And determining the food material taken out of the refrigerator and/or the food material put into the refrigerator according to the comparison result.
Specifically, if the second food material identifier set is a proper subset of the first food material identifier set, that is, the first food material identifier set includes the second food material identifier set, and the two sets are different, it is determined that the operation is to place food material, and the food material identifiers of the food material placed in the refrigerator are a third food material identifier set, where the third food material identifier set is an absolute complement of the second food material identifier set in the first food material identifier set. If the first food material identification set is a proper subset of the second food material identification set, that is, the second food material identification set contains the first food material identification set, and the two sets are different, it is determined that the operation is to take out food material, and the food material identification of the food material taken out of the refrigerator is a fourth food material identification set, which is an absolute complement of the first food material identification set in the second food material identification set. And if the first food material identification set is the same as the second food material identification set, the refrigerator determines that the food materials are not taken or placed from the refrigerator. If the first set of food material identifications is not a subset of the second set of food material identifications, two situations are included: the first food material identification set and the second food material identification set have an intersection, or the first food material identification set and the second food material identification set do not have an intersection, it is determined that the food material is put in and taken out in the operation, the food material identification of the food material taken out of the refrigerator is a fifth food material identification set, and the food material identification of the food material put in the refrigerator is a sixth food material identification set.
Under the condition that the first food material identification set and the second food material identification set have intersection, the fifth food material identification set is contained in the second food material identification set and is not contained in the first food material identification set; the sixth set of food material identifiers is included in the first set of food material identifiers and is not included in the second set of food material identifiers. And under the condition that the first food material identification set and the second food material identification set are not intersected, the fifth food material identification set is the second food material identification set, and the sixth food material identification set is the first food material identification set.
For example, assuming that the first set of food material identifiers is { a, B, C, D }, and the second set of food material identifiers is { a, B, C }, the refrigerator may determine that the third set of food material identifiers of the food materials put into the refrigerator is { D } when { a, B, C } is determined to be a proper subset of { a, B, C, D }.
For another example, assuming that the first set of food material identifiers is { a, B, C }, and the second set of food material identifiers is { a, B, C, D }, the refrigerator may determine that the fourth set of food material identifiers of the food materials taken out of the refrigerator is { D } when { a, B, C } is determined to be a proper subset of { a, B, C, D }.
For another example, assuming that the first food material identifier set is { a, B, C }, and the second food material identifier set is { a, B, D }, the refrigerator may determine that a fifth food material identifier set of the food material taken out of the refrigerator is { D }, and a sixth food material identifier set of the food material put into the refrigerator is { C }, when it is determined that the { a, B, C } and the { a, B, D } have an intersection.
For another example, assuming that the first food material identifier set is { a, B, C }, and the second food material identifier set is { D }, the refrigerator may determine that the fifth food material identifier set of the food material taken out of the refrigerator is { D }, and the sixth food material identifier set of the food material put into the refrigerator is { a, B, C }, when it is determined that { a, B, C } and { D } are not intersected.
203. And determining the compartment to which the food material taken out of the refrigerator and/or the food material put into the refrigerator belongs according to the RFID detection module which detects the taken-out food material and/or the food material put into the refrigerator.
Optionally, for any food material taken out of the refrigerator, the refrigerator may determine that the food material belongs to the first compartment when determining that the food material identifier of the food material is contained in the database of the first compartment. The database of the chamber is used for storing the food material information of the chamber.
It can be understood that after the refrigerator determines the compartment to which the food material taken out of the refrigerator belongs, the food material identifier of the food material taken out of the refrigerator can be deleted from the database of the corresponding compartment, so as to facilitate the automatic management of the food material of the compartment.
For example, assuming that the fourth set of food material identifiers of the food material retrieved from the refrigerator is determined to be { D }, the refrigerator may determine that the food material corresponding to D belongs to the refrigerating compartment when it is determined that the food material identifier D is contained in the database of the refrigerating compartment.
Optionally, when feeding back the RFID tag signal to the RFID processing module, the RFID detection module may also transmit an identifier of the RFID detection module. Therefore, the RFID processing module can know which RFID detection module detects the received RFID label signal according to the pre-stored corresponding relation between the identification of the RFID detection module and the compartment.
It can be understood that after determining the compartment to which the food material put into the refrigerator belongs, the food material identifier of the food material put into the refrigerator can be added to the database of the corresponding compartment.
Optionally, the specific process of determining the compartment to which the food material put into the refrigerator belongs by the RFID processing module is as follows:
if 1 RFID detection module of the food material put into the refrigerator is detected, the fact that the food material is detected by only one RFID module is indicated, and at the moment, the RFID processing module can determine that the food material put into the refrigerator belongs to the compartment where the RFID detection module detecting the food material is located.
If the at least two RFID detection modules of the food material put into the refrigerator are detected, the food material is detected by the at least two RFID detection modules, namely the RFID detection modules have the condition of false identification. At this time, the RFID processing module may determine, as the compartment to which the food material put into the refrigerator belongs, the compartment in which the RFID detection module corresponding to the largest identification frequency among the identification frequencies corresponding to the at least two RFID detection modules, and/or may determine, as the compartment to which the food material put into the refrigerator belongs, the compartment in which the RFID detection module corresponding to the largest average return signal intensity among the average return signal intensities corresponding to the at least two RFID detection modules. The identification times are the times of food materials put into the refrigerator detected by an RFID detection module within preset time. The average return signal strength is obtained by dividing the sum of the return signal strengths of the identification times by the identification times, and the return signal strength is the strength of the RFID label signal received by the RFID detection module.
It can be understood that, when the RFID processing module determines the compartment to which the food material put into the refrigerator belongs by combining the identification times and the average return signal strength, the following method may be adopted:
in a possible implementation manner, the refrigerator may determine, as a first compartment set, a compartment in which the RFID detection module corresponding to the maximum number of times among the identification numbers corresponding to the at least two RFID detection modules in a one-to-one manner is located, and determine, as a second compartment set, a compartment in which the RFID detection module corresponding to the maximum signal intensity among the average return signal intensities corresponding to the at least two RFID detection modules in a one-to-one manner is located. And finally, taking the intersection of the first compartment set and the second compartment set, and determining that the food material belongs to the compartment when the intersection only comprises one compartment, or else, determining the compartment to which the food material belongs according to the confirmation operation of the user.
In another possible implementation, the refrigerator may employ the following formula: and c, determining an antenna reference value c corresponding to each RFID detection module in at least two RFID detection modules. Wherein a is a frequency weight, b is a signal intensity weight, and a and b are pre-stored in the refrigerator. The refrigerator may determine, as the compartment to which the food material belongs, the compartment in which the RFID detection module corresponding to the largest c value among all c is located.
For example, assume that the refrigerator includes three compartments, a refrigerating compartment, a freezing compartment, and a temperature-changing compartment. The three rooms are respectively internally provided with an RFID detection module, and the identifications of the three RFID detection modules are respectively as follows: 1. 2 and 3, identifying the food material as EPC. And assuming that the preset time period is 4 seconds(s) and the scanning period is 50 milliseconds (ms), the EPC corresponding to the food material put in the refrigerator and the identification of the RFID detection module that detected the food material are shown in the second and third columns of table 1.
TABLE 1
As can be seen from table 1, the identifiers of the RFID detection modules corresponding to EPC 20000006, 20000001, and 20000010 are all 1, so that it can be determined that the food material corresponding to EPC 20000006 belongs to the refrigerating compartment, the food material corresponding to EPC 20000001 belongs to the freezing compartment, and the food material corresponding to EPC 20000010 belongs to the refrigerating compartment.
The identifiers of the RFID detection modules corresponding to the EPC 20000017 are 2, 3 and 1 respectively, and the refrigerator determines the compartment to which the food material belongs by combining the identification times and the average return signal strength. Then the refrigerator may determine that the first compartment set includes the temperature-changing compartments according to the identification times 40 > 3, and determine that the second compartment set includes the temperature-changing compartments according to the average returned signal intensity (-49) > -69, and the intersection of the two is the temperature-changing compartments, that is, it is determined that the food material corresponding to the EPC 20000017 belongs to the temperature-changing compartments.
According to the food material management method for the refrigerator, after the refrigerator detects a door closing signal of the refrigerator, the RFID processing module controls the RFID detection module arranged in each compartment to detect the RFID tag corresponding to each food material in the corresponding compartment to obtain a first food material identification set, the food material taken out of the refrigerator and/or the food material put into the refrigerator is determined according to the comparison result of the first food material identification set and the food material identification set obtained when the refrigerator is closed last time, namely the second food material identification set, and finally the compartment to which the food material taken out of the refrigerator and/or the food material put into the refrigerator belongs is determined according to the RFID detection module which detects the food material taken out of the refrigerator and/or the food material put into the refrigerator. Therefore, compared with the prior art that food materials are managed only by means of antenna identification, the refrigerator food material management method and the refrigerator food material management system have the advantages that the RFID detection modules are arranged in the compartments, and the shielding materials are added in the partition plates of the compartments, so that the fact that the RFID detection modules of the compartments can only identify the food materials in the compartments is guaranteed to the greatest extent, the error identification rate of the antennas of the compartments identifying the food materials in other compartments is reduced, and the accuracy of food material management of the refrigerator is improved.
The embodiment of the invention also provides a food material management method for the refrigerator, which can be applied to the condition that the shielding material can shield all RFID label signals of adjacent compartments, namely, false identification does not exist. The method can comprise the following steps: after a door closing signal of the target compartment is detected, the RFID processing module controls the RFID detection module in the target compartment to detect the RFID tag corresponding to each food material in the target compartment, and a first food material identification set is obtained. And determining the food materials taken out of the target compartment and/or the food materials put into the target compartment according to the comparison result of the first food material identification set and the food material identification set obtained when the target compartment is closed last time, namely the second food material identification set.
Therefore, when the door of a certain compartment of the refrigerator is closed, the refrigerator can detect the food materials through the RFID detection module of the compartment, so that the food materials taken and placed in the compartment can be determined, and automatic management of the food materials is realized.
The scheme provided by the embodiment of the invention is mainly introduced from the perspective of the refrigerator. It is understood that the refrigerator includes corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above-described functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, in conjunction with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The embodiment of the present invention may perform the division of the functional modules for the refrigerator according to the above method, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, the division of the modules in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.
In the case of dividing each function module by corresponding functions, fig. 4 shows another possible composition diagram of the refrigerator related to the above embodiment, as shown in fig. 4, the refrigerator may include: a control unit 31 and a determination unit 32.
Wherein, the control unit 31 is configured to support the refrigerator to perform step 201 in the food material management method of the refrigerator shown in fig. 3.
A determining unit 32, configured to support the refrigerator to perform steps 202 and 203 of the food material management method of the refrigerator shown in fig. 3.
Further, as shown in fig. 5, the refrigerator may further include: an adding unit 33 and a deleting unit 34.
Wherein, the adding unit 33 is configured to support the refrigerator to perform the food material identification of the food material put into the refrigerator in the food material management method of the refrigerator shown in fig. 3.
A deleting unit 34 for supporting the refrigerator to execute the method for managing food materials of the refrigerator shown in fig. 3, wherein the food material identification of the food material taken out of the refrigerator is deleted from the database of the corresponding compartment.
It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
The refrigerator provided by the embodiment of the invention is used for executing the food material management method of the refrigerator, so that the same effect as the food material management method of the refrigerator can be achieved.
Through the above description of the embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solution of the embodiments of the present invention may be essentially or partially contributed to by the prior art, or all or part of the technical solution may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions within the technical scope of the present invention are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A refrigerator, characterized in that the refrigerator comprises:
at least two separate compartments, adjacent said compartments being separated by a thermally insulating partition;
the RFID detection module is positioned in each compartment and used for transmitting a wireless signal to the corresponding compartment and receiving an RFID label signal in the compartment;
shielding material positioned within the partition for shielding portions of the RFID tag signals within adjacent compartments;
and the RFID processing module is connected with the RFID detection module and used for controlling the RFID detection module to transmit the wireless signal and receiving the RFID label signal fed back by the RFID detection module.
2. The refrigerator according to claim 1,
the shielding material is a metal material.
3. Food material management method for a refrigerator, applied to the refrigerator of claim 1 or 2, characterized in that the method comprises:
after the door closing signal of the refrigerator is detected, the radio frequency identification RFID processing module controls the RFID detection module arranged in each compartment to detect the RFID label corresponding to each food material in the corresponding compartment, and a first food material identification set is obtained;
determining food materials taken out of the refrigerator and/or food materials put into the refrigerator according to a comparison result of the first food material identification set and a second food material identification set, wherein the second food material identification set is a food material identification set obtained when the refrigerator is closed last time;
determining a compartment to which the food material taken out of the refrigerator and/or the food material put into the refrigerator belongs according to the RFID detection module which detects the taken-out food material and/or the food material put into the refrigerator.
4. The food material management method for the refrigerator as recited in claim 3, wherein the determining of the food material taken out of the refrigerator and/or the food material put into the refrigerator according to the comparison result of the first food material identification set and the second food material identification set comprises:
if the second food material identification set is a proper subset of the first food material identification set, determining that the operation is to put in food material, and the food material identification of the food material put in the refrigerator is a third food material identification set which is an absolute complement of the second food material identification set in the first food material identification set;
if the first food material identification set is a proper subset of the second food material identification set, determining that the operation is food material taking out, and the food material identification of the food material taken out from the refrigerator is a fourth food material identification set which is an absolute complement of the first food material identification set in the second food material identification set;
if the first food material identification set is not the subset of the second food material identification set, determining that the operation is food material input and food material output, the food material identification of the food material output from the refrigerator is a fifth food material identification set, and the food material identification of the food material input into the refrigerator is a sixth food material identification set;
and if the first food material identification set is the same as the second food material identification set, determining that food materials are not picked and placed from the refrigerator.
5. The food material management method for the refrigerator of claim 4, wherein if the first set of food material identifications is not a subset of the second set of food material identifications, comprising:
if the first food material identification set and the second food material identification set have an intersection, or if the first food material identification set and the second food material identification set have no intersection;
when the first food material identifier set and the second food material identifier set intersect with each other, the fifth food material identifier set is included in the second food material identifier set and is not included in the first food material identifier set; the sixth set of food material identifiers is included in the first set of food material identifiers and is not included in the second set of food material identifiers; when the first food material identification set and the second food material identification set do not intersect with each other, the fifth food material identification set is the second food material identification set, and the sixth food material identification set is the first food material identification set.
6. The food material management method for a refrigerator of any one of claims 3 to 5, wherein the method further comprises:
adding the food material identification of the food material put into the refrigerator into a database of a corresponding compartment;
and deleting the food material identification of the food material taken out of the refrigerator from the database of the corresponding compartment.
7. The food material management method for the refrigerator according to any one of claims 3 to 5, wherein the determining of the compartment to which the food material taken out of the refrigerator belongs comprises:
and when the food material identification of the food material taken out of the refrigerator is determined to be contained in the database of the first chamber, determining that the taken-out food material belongs to the first chamber.
8. The food material management method for the refrigerator according to any one of claims 3 to 5, wherein the determining of the compartment to which the food material put into the refrigerator belongs comprises:
if 1 RFID detection module of the food material put into the refrigerator is detected, determining that the food material put into the refrigerator belongs to the compartment where the RFID detection module of the food material put into the refrigerator is detected;
if the number of the RFID detection modules of the food material put into the refrigerator is detected to be at least two, determining a compartment where the RFID detection module corresponding to the largest identification frequency in the identification frequencies corresponding to the at least two RFID detection modules belongs to the compartment where the food material put into the refrigerator belongs, and/or determining a compartment where the RFID detection module corresponding to the largest average return signal intensity in the average return signal intensities corresponding to the at least two RFID detection modules belongs to the compartment where the food material put into the refrigerator belongs; the identification times are the times that food materials put into the refrigerator in a preset time are detected by an RFID detection module, the average return signal strength is obtained by dividing the sum of the return signal strengths of the identification times by the identification times, and the return signal strength is the strength of an RFID label signal received by the RFID detection module.
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Application publication date: 20210907 |